Trussed car-bolster.



PATENTED APR. l0, 1906.

A. STUGKI. TRUSSBD GAR BOLSTER.

APPLICATION FILED JUNBQ. 1905.

IIIJIIIIIII.

HNWIENTOR srarns PATENT FFICF.. i

Specification of Letters Patent.

Patented April 10, 1906.

Application filed .Tune 9, 1905. Serial No, 264,452.

To al?, whom t 'may concern:

Beit known that l, ARNOLD Srucirr, a resident of Allegheny, in the county oi Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Trussed Car Bolsters; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to bolsters for railway-trucks and the like, and has special reference to what are known as trussed bolsters.

lhe object of my invention is to provide a bolster of this character which is cheap and simple in its construction and will possess a large degree of strength and efficiency in proportion to its weight.

My invention consists, generally stated, in the novel arrangement, construction, and combination of parts, as hereinafter more specifically set forth and described, and particularly pointed out in the claims.

.Referring to the accompanying drawings, Figure l is a plan view of my improved bolster. Fig. 2 is a side view of the same and showing a portion of one end in section. Fig. 8 is an end view, and Fig. 4 is a central transverse section through the same. Fig. 5 is a bottom view of the bolster-rest. Fig. 6 is a longitudinal section of' the same on the line 6 6, Fig. 5.

Like symbols oi' reference herein indicate like parts in each of the figures of the drawings.

As illustrated in the drawings, the bolster A is the trussed type having the compression member 1, which is formed of a rolled channel-beam and placed with the flanges thereof projecting vertically downward in order to secure vertical stiffness. A tension member `2 is formed of a flat plate which is bowed at its middle and thence extends upwardly and meets the compression member 1 at its ends, where it is secured by suitable rivets 2, and such `tension member meets or joins the compression member at a point l which is at the center of the truck-springs, (not shown,) so that the two members will be spread sufiiciently ap art at the inside of the springs,where the bending movement is considerable. In the angle between the tension and compression members is placed a suitable filling-block 1f, which is secured in place by suitable rivets A and such block will take care of the weight of the side bearings 5 oi' any suitable construction, secured to the compressionA member 1 at the usual point by rivets 5 and 5, and the rivets assisting, with the rivets 4, to secure the block 4 in place. Columnguides or chafing-plates 6 are secured to the side flanges of the compression member l by means of rivets 6 passing through said plates 6 and flanges at or about their centers and through said flanges and lugs or proj ectionsv 6, extending out from the sides of the said plates, although, if desired, these guides 6 can be formed as part of the bolster-rest g but, to avoid confusion, they are shown separate.

A strut 7 separates the compression and tension members at their middle portions and is in the form oi a casting which fits within the channel of the compression member l and has its lower end resting upon the tension member 2, while such lower endhas lips or flanges 7', which take against the side edges of said tension member to hold the parts in place at this point without riveting. The strut 7 is also provided with a socket 8 through the upper end of the same for receiving the king-pin (not shown) and with` an inner web or iin 9, `formed on the sides and upper and lower ends of the strut, which forms an opening 9 through and between the same for the king-bolt to project into from the socket 8, while the sides of' the strut are recessed at 8 for fitting around the flanges on the compression member l. On the top of the compression member l and above the strut 7 is the center bearing-plate l0, which is secured by rivets 10', passing the same and the member and strut for securing these parts to ether, and such bearing-plate l() is provide with lugs or lips 11 thereon for bearing against the side edges of the compression member to take the strain coming' from end thrusts or shocks, thus preventing the rivets from being sheared off, while a hole or opening 1 2 is formed through the plate 10 for coming in line with the socket S in the strut and for securing the king-pin within said socket.

At each end of the bolster A is the bolsterrest 13, which is preferably made as a casting and forms a seat for the truck-springs, which seat can be made of different heights to suit different requirements*existing on different railroads.

To drive long rivets is objectionable, as a IOO rule, and for this reason places have been provided within the rest 13 whereby it can be secured to the compression and tension members by short and power-driven rivets, so that such rivets will furnish the full amount of strength in helping to unite said members. rlwo of these places are obtained by curving the bottom of the rest 13 out and raising the same into pockets 14, (preferably cylindrical in shape,) which pockets rest against the tension member 2 and form a sti but light column between the bottom or spring plate 14 and said tension member. The third place for securing the bolster-rest 13 to the tension and compression members is obtained by curving the end wall at 13 and leaving oil the bottom 14 of the rest outside of the curved wall to form practically a semicylindrical pocket 14 which will provide another place for an ei'ective short powerdriven rivet for securing the rest-casting to the said members. and for resisting the separation of these main bolster members.

To strengthen the bottom or spring plate 14 of the rest 13, a cross-web 15 has been provided between the two cylindrical pockets 14, and two longitudinal webs 15 extend between said pockets and the end wall 13 to stiften said plate in the other direction, while in the center of the plate 14 another longitudinal web 15 has been inserted between the cross web 15 and the semicylindrical pocket 14 to stiffen the rest casting still more.

To nish the bolster-rest 13 at the end, the end wall 16 has been extended to iit the inside of the channel or compression member 1, and along the sides of the spring-plate 14 of the rest the two longitudinal webs .16 and 16 will furnish the space between the plate 14 and the bottom edges of the channel-bar flanges for forming the compression member 1, which side webs extend from said end wall 16 and terminate at the cylindrical pockets 14. It is also desired to sti'lien the inside cor- I ners of the plate 14 by means of diagonal webs 15, which extend from said plate to and connect with said pocket 14.

The rivets 17 for securing the members 1 and 2 together and the rivets 17 and 17 for securing the bolster-rest 13 to these members together are preferably placed staggered and decrease in number from the end toward the middle, as shown in Fig. 1, in order that the strength of the members is not reduced to the same extent that they would be if more than one rivet were placed in the inside transverse line, although it is evident that two rivets can be placed in such a line through the main members of it, if so desired. The tension member 2 is a thin plate of substantially the same width of the compression member 1, so that as a result it will not be weakened by the rivet-holes to the same extent as a number of thicker plates would be.

The bolster is light, strong, and durable and as a whole has all the advantages of 0rdinary trussed bolstersi. e., the material is located in the chords of the truss and little or none of it at the neutral axis, where it will do no good. rlhe tension and compression members are ordinary rolled parts and of merchantable stock, which can be easily secured and require only slight bending to bring them to the necessary shape. The castings are all simple, and the parts are united by rivets, so that no special machinery and practically no skilled labor is necessary to build the bolster, while all the rivets can be driven by power instead of by hand.

The bolster-rest will do away with the ordinary wooden spring-seat and is so arranged that the last three rivets can be driven by power through the bolster and the bolsterrest. The rest is so secured as to permit the use of short rivets, and the walls of the rest being circular will enable the rest to be strong and steady against compression, while at the same time the construction of the rest will enable any repair-shop to apply the same, as well as to repair the bolster.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A bolster comprising a compression member, a tension member, a strut, a bolsterrest having pockets formed therein, and means within said pockets for securing the rest and members together.

2. A bolster comprising a compression member, a tension member, a strut, a bolsterrest having pockets formed therein, means .lOO

within said pockets for securing the rest and members together, and ribs or webs on the bottom of said rest to sti'en the same.

3. A bolster comprising a compression member, a tension member, a strut, a bolster having pockets formed therein, means within said pockets for securing the rest and members together, and end walls on said rest to iinish oii the same.

4. A bolster comprising a compression member, a tension member, a strut, a bolster having pocketsformed therein, means within said pockets for securing the rest and members together, and side ribs or Webs on the bottom of said rest to iinish 0H the space between said bottom and compression member.

5. A bolster comprising a compression member, a tension member, a strut, a bolsterrest having cylindrical and semicylindrical pockets formed therein, and means within said pockets 'for securing the rest and members together.

6. A bolster comprising a compression member, a tension member, a strut, a bolsterrest having cylindrical and semicylindrical pockets formed therein, and ribs or webs on the bottom oi said rest to stiften the same.

7. A bolster comprising a ,compression member, a tension member, a strut, a bolster- IIO rest having cylindrical and semioylindrieal space between said bottom and compression pockets formed therein, and. end Walls on member. 1o said rest to 'finish off the same. In testimony whereof I, the seid ARNOLD 8. A bolster comprising a compression STUCKI, have hereunto set my hand. member, a, tension member, a strut, e bolster- ARNOLD STUCKI. rest having cylindrical end semeylindrieal Witnesses: pockets formed therein, and side ribs or Webs J. N. COOKE on the bottom of said rest to nish off the R. H. AXTl-IELM. 

